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Top Forums Shell Programming and Scripting Fastest way calculating directory Post 302867895 by bakunin on Friday 25th of October 2013 07:48:26 AM
Old 10-25-2013
Any access to such a file system will tend to be slow because of the many necessary calls to stat(), not only the reading of the (basically) inode-structure by du. To minimize not only your problem at hand but all similar problems regarding this filesystem i suggest you move the vital FS information (that is: inodes and the like - all the metainformation) to some high-bandwidth storage, like an SSD.

I saw a similar problem (backup/restore of a huge GPFS with ~500TB of data) solved by introducing a 150GB SSD holding just the metadata. It reduced the necessary time from ~6 hours to ~90 minutes using the same hardware.

I hope this helps.

bakunin
 

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NWDIR(1)							       nwdir								  NWDIR(1)

NAME
nwdir - Lists files in directory SYNOPSIS
nwdir [-h] [-v] [-l] [-t] [-d] [-e] [-f] [directory] DESCRIPTION
nwdir lists files, directories and their attributes from the specified NetWare directory. OPTIONS
-h -h is used to print out a short help text. -d List directories like other files, rather than listing their contents. -l Show filename in all available namespaces. -v Verbose listing, display everything possible. -e Display OS/2 Extended Attributes. -f List connections using each file. -t Show all informations (rights, attributes, file inodes) also as hexadecimal numbers. directory You can specify the directory to list. Current working directory is used by default. You have to specify path in Linux format, not in NetWare format. EXAMPLES
nwdir -t -v /NetWare/server/sys With this example, all files from directory /NetWare/server/sys are displayed. AUTHORS
nwdir was written by Milan Vandrovec. See the Changes file of ncpfs for other contributors. BUGS
Directory quotas are not displayed. User names are not taken from NDS, but only from bindery. nwdir 4/2/1998 NWDIR(1)
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